is there any living entity in the world that doesnt use oxygen to live.?

Answer 1

anaerobic bacterias

Answer 2

Anaerobic bacteria can take the energy out of minerals like sulphur, iron, Nitrates and others, without the involvement of Oxygen. They live in swamps and in the bottom of the sea.
Some intestinal parasites have anaerobic metabolisms, because the partial pressure of oxygen in the intestines is practically null. They break down the same food as we do, but with a different process that aerobic (oxygen consuming) respiration. They can use oxygen when it is available. The anaerobic process yields a lot less energy per "food" molecule, so it consumes a lot more "food".
Many bacteria can do this also, and i'm talking normal soil, water and intestinal bacteria, as well as most fungi. Theese organisms are called "facultative anaerobic" because when there's no oxygen they can live. Instead of respiration, they use fermentation (a process that produces Co2, Alcohol or lactic acid).
There's even bacteria that can only ferment and will die in the presence of oxygen.
And plants could live without oxygen too. They can use it becuse aerobic respiration is such an efficient energy yielding process, than when combined with Photosinthesys, gives them a great advantage. But if there wasn't any oxygen, they could live with photosinthesys...

Answer 3

just because WE use oxygen, doesnt mean everything does...in fact oxygen is a poison and its just a coincidence that we use it...and the only reason we do is to accept electrons when making ATP at the end of the electron transport chain, thats all
there are a lot of other molecules that can do that...sulfur for one, which is what a lot of bacteria use, and many of those if they even come into contact with O2 will die

Answer 4

an organism that doesnt survive in the presence of oxygen or that can survive even in the absence of oxygen is called an anaerobic organism. obligate anaerobe is a microorganism that cannot use oxygen and can grow only in the absence of free oxygen. Facultative anaerobes can use oxygen when it is present..examples r Anaerobic bacteria and archaea.

Answer 5

plants use co2 in daytime only to prepare their food(phyto synthesis)
but rest of the time they also use o2 for respiration
to the extent i know biology ,my knowledge do not accept it ,any entity (living)can survive without o2,
but some virus can live even in the very frigid surrounding,that time they behave almost like DEAD,
when they get condusive atmosphere they start living,
even then hard to accept& say YES to ur Q.

Answer 6

yes there are many things which do not required oxygen to live,
for example trees they donot requireed oxygen living purpose but they exhail is oxygen..so in this manner many r there which we dont know and reaserch is continue on those

Answer 7

Quite a few, actually.In the deep oceans near the volcanic vents you'll find all sorts of interesting species whose entire life mechanism is different from ours.

Answer 8

Yes, some forms of bacteria live in deep oceans and live on Sulphur emissions.

Answer 9

yes THERE ARE certain anaerobic bacteria. They survive in areas with no oxygen.

Answer 10

yes few anaerobic bacteria dont need oxygen and in fact they die when they come in contact with atmospheric gasses.

Answer 11

many anaerobic living organisms r there.[plant use o2 during night time]